“We were ecstatic to be asked back,” Reilly tells PEOPLE. “It’s a once in a lifetime opportunity that we have been lucky enough to do twice!”

The first time Reilly and Villegas – known to their fans as “Brenchel” – competed on The Amazing Race, their constant bickering wore on them, and they came in third after misreading a clue on the final leg of the race.

“This time we knew we had to put our emotions aside and focus on the game,” says Reilly. “We want to win the million dollars so we can start a family.”

The couple have been married since 2012 and are hoping the grand prize could help them buy a house with a yard for their Rottweiler shelter dog Benz and the family they hope to start soon.

“Brendon is a couple years away from finishing his Ph.D. from UCLA in biomedical physics, and living in Los Angeles can be expensive,” Reilly says. “So this season, Brendon and I are racing for four now: Brendon, myself, Benz and our future baby.”

But getting to the finals may prove tough for the couple, who will be going up against fan-favorites known as “The Globetrotters,” “The Cowboys” and many other familiar faces.

Here’s the full list of the all-stars “Brenchel” will be competing against when the new season of The Amazing Race premieres Feb. 23 on CBS.